TY - JOUR
T1 - Prolonged Controlled Hemorrhagic Shock in a Swine Model
T2 - Is There a Role for Mechanical Circulatory Assistance?
AU - Radovancevic, Branislav
AU - Eichstaedt, Harald C.
AU - Tamez, Dan
AU - Patel, Vijay
AU - Eya, Kazuhiro
AU - Nolden, Laura K.
AU - Byler, Denise
AU - Cohen, David
AU - Frazier, O. H.
PY - 2003/11
Y1 - 2003/11
N2 - Outcomes of mechanical circulatory assistance during hemorrhagic shock were evaluated in a swine model. Pigs were bled to a mean arterial pressure of 35 mm Hg (group I, n = 3) or 40 mm Hg (group II, n = 5; group III, n = 5), maintained there for 30 minutes, and then resuscitated with fluids alone (groups I and II) or fluids plus mechanical circulatory assistance (group III). Mean blood loss was greater in group I than in groups II or III (1,037 ± 212 vs. 862 ± 387 ml vs. 681 ± 117 ml, respectively; I vs. III, p < 0.05) and survival was shorter (230 ± 25.5 min vs. 709 ± 251 min vs. 662 ± 428 min, respectively; I vs. II or III, p < 0.05). Cardiac arrhythmia caused death in most cases. Mean biochemical parameters increased progressively in all cases. Left anterior descending coronary artery flow stayed relatively constant in group II but increased in group III. Superior mesenteric artery flow returned to baseline in group II but increased in group III. Cardiac output was similar in groups II and III, but SGOT levels significantly differed (750 ± 135 U/L vs. 359 ± 157 U/L; p < 0.005). These results suggest that the swine model will be useful for studying ways to improve outcomes after prolonged hemorrhagic shock.
AB - Outcomes of mechanical circulatory assistance during hemorrhagic shock were evaluated in a swine model. Pigs were bled to a mean arterial pressure of 35 mm Hg (group I, n = 3) or 40 mm Hg (group II, n = 5; group III, n = 5), maintained there for 30 minutes, and then resuscitated with fluids alone (groups I and II) or fluids plus mechanical circulatory assistance (group III). Mean blood loss was greater in group I than in groups II or III (1,037 ± 212 vs. 862 ± 387 ml vs. 681 ± 117 ml, respectively; I vs. III, p < 0.05) and survival was shorter (230 ± 25.5 min vs. 709 ± 251 min vs. 662 ± 428 min, respectively; I vs. II or III, p < 0.05). Cardiac arrhythmia caused death in most cases. Mean biochemical parameters increased progressively in all cases. Left anterior descending coronary artery flow stayed relatively constant in group II but increased in group III. Superior mesenteric artery flow returned to baseline in group II but increased in group III. Cardiac output was similar in groups II and III, but SGOT levels significantly differed (750 ± 135 U/L vs. 359 ± 157 U/L; p < 0.005). These results suggest that the swine model will be useful for studying ways to improve outcomes after prolonged hemorrhagic shock.
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U2 - 10.1097/01.MAT.0000093966.23324.00
DO - 10.1097/01.MAT.0000093966.23324.00
M3 - Article
C2 - 14655742
AN - SCOPUS:0242594592
SN - 1058-2916
VL - 49
SP - 721
EP - 726
JO - ASAIO Journal
JF - ASAIO Journal
IS - 6
ER -